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} <br /> Y <br /> / WALLACE • KUHL February 5, 2001 <br /> &ASSOCIATES INC. <br /> - f <br /> Mr. Jeffrey Wong <br /> Geoi.echnical Engineering <br /> San Joaquin County Public Health Services <br /> Engineering Geology Environmental Health Division <br /> 304 East Weber Avenue, Third Floor ` <br /> Environmental Consulting <br /> Stockton, California 95202 <br /> Remediation Services <br /> Report of Findings and Quarterly Groundwater Monitoring <br /> Construction Inspecl.ion <br /> CRYSTAL CREAMERY STOCKTON F, <br /> Materiais Testing 404 West Fremont Street <br /> Stockton, California 95203 <br /> WKA No. 1628.10 <br /> Introduction <br /> r <br /> In accordance with our Site Investigation workplan dated December 21; 1999 and June k <br /> 12,2000 approved by San Joaquin County,we have completed soil and groundwater �. <br /> =' r remediationpilot testing and an additional phase 11 investigation at the above site(Plate <br /> 1). The purpose of our work was to evaluate the site for possible remediation and to <br /> further evaluate groundwater quality northeasterly of the site. The scope of the <br /> remediation pilot testing included completing a soil vapor extraction pilot test followed <br /> by a groundwater sparging pilot test. The scope of the additional phase II investigation <br /> included drilling three soil borings, collecting and analyzing water samples from each, <br /> then converting one boring to a small-diameter monitoring well. For simplicity,we have <br /> broken out the two phases of work below. <br /> Vapor ExtractionlSparging Pilot Test <br /> CORPORATE OFFICE A vapor extraction pilot test was performed at the site on February 2, 2000. The pilot <br /> 3050 hiclustrial Blvd. test was conducted in accordance with the guidelines and requirements of the San <br /> West Sacramento <br /> CA 95691 Joaquin Environmental Health Services (SCEHS)and San Joaquin Valley Unified Air <br /> Fel 916.372.1434 pollution Control District(SJVUAPCD). Soil vapor extraction is a remediation <br /> Fax 916.372.2565 <br /> technology for removing light end hydrocarbons from subsurface soils. Soil vapor <br /> ROCKLIN OFFICE <br /> 500 Menlo Drive, extraction works by removing light end hydrocarbons which volatilize and fill the pore <br /> Suite 100 <br /> ' Rocklin,CA 95765 <br /> Fel 916.435.9722 <br /> Fax 916.435.9822 <br /> F: <br />